A system and method for automatically adjusting the value of a parameter defined to manage and control the resources recruited by an implantable medical device to supply power or the device to deliver an instance of an electrical stimulation therapy to a patient. The system includes a screw, a battery, a controller, and means for connecting the battery such that current is routed from the battery through the screw and thence to a target area of interest requiring treatment. The drive mechanism further includes a clutch arrangement operable during the dose setting routine to inhibit forward movement of the plunger andor to isolate the dose setting element from the force of the drive spring.